Automate Brew Updates with launchd for a particular user

brew.sh

#!/usr/bin/env bash
# -----------------------------------------------------------------------------
# brew.sh
#
# Script to automate brew updates
#
# Usage: bash brew.sh
#
# Author: Jayson Grace, https://techvomit.net
# ----------------------------------------------------------------------------

brew update
brew upgrade
brew cleanup

domainextension.site.usernamegoeshere.autobrew.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
    <dict>
        <key>EnvironmentVariables</key>
        <dict>
            <key>PATH</key>
            <string>/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:</string>
        </dict>

        <key>Label</key>
        <string>domainextension.site.usernamegoeshere-brew</string>

        <key>ProgramArguments</key>
        <array>
            <string>bash</string>
            <string>-c</string>
            <string>/Users/usernamegoeshere/Library/LaunchAgents/brew.sh</string>
        </array>

        <key>StartCalendarInterval</key>
        <dict>
            <key>Hour</key>
            <integer>16</integer>
        </dict>
    </dict>
</plist>

setup.sh

#!/usr/bin/env bash
# -----------------------------------------------------------------------------
# setup.sh
#
# Dumb setup script for the automated brew updates work
# that assumes the files that it's moving into place are in the same 
# directory as this script when it is run.
#
# Usage: bash setup.sh
#
# Author: Jayson Grace, https://techvomit.net
# ----------------------------------------------------------------------------

mv brew.sh ~/Library/LaunchAgents
mv domainextension.site.usernamegoeshere.autobrew.plist ~/Library/LaunchAgents
chmod +x ~/Library/LaunchAgents/brew.sh
launchctl load ~/Library/LaunchAgents/domainextension.site.usernamegoeshere.autobrew.plist